The family-owned, New York-based D'Addario has been in the string-making business for several generations, originating from Italy. Today, they are one of the world's largest string manufacturers. They were the first company to switch from gut strings to nylon, and now produce a wide selection of acoustic, electric, classical and bass guitar strings using the latest technology and materials. D'Addario strings are widely respected among the music industry's most well-known guitar players, including Sheryl Crow, Lenny Kravitz, Pat Metheny, Tom Hamilton of Aerosmith, Dave Matthews and John Scofield.In our line of D'Addario guitar strings for acoustic guitars, we have the traditional round wound strings. There are flat tops, which have the same tension and flexibility of round wound, but produces a smoother feel and minimizes finger noise. These strings are especially recommended for slide guitar and flatpicking. Silk & Steel strings use silver-plated copper wrapping which is woven with silky fibers for a softer touch and mellower tone that make them ideal for folk guitar playing. The metal alloys used include phosphor bronze for long life, 80/20 bronze (which is copper and zinc) and silver-plated copper, a favorite of classical and folk players because of its warm tone. D'Addario's EXP micro-fine coating technology treats the wrap wire before winding, which protects the strings while maintaining an uncoated tone and feel. In addition to acoustic and electric strings, D'Addario also makes mandolin strings, ukulele strings, and also strings for mandola, fiddle and banjo.